I felt the quake in Hot Springs Montana about 12:30 AM MDT on July 6 2017.

A moderate earthquake with magnitude 5.8 (ml/mb) was detected on Wednesday, 9 kilometers (6 miles) from Lincoln in Montana.

The M5.8 earthquake is the largest earthquake in years hitting the region of Yellowstone national park in Montana. It was felt in Oregon and Washington state.

A moderate earthquake with magnitude 5.8 (ml/mb) was detected on Wednesday, 9 kilometers (6 miles) from Lincoln in Montana.

The temblor was reported at 23:30:16 / 11:30 pm (local time epicenter, July 6, 2017 @ 6:30 am UTC). The epicenter was at a depth of 4.3 km (3 miles).

The strong M5.8 earthquake was followed by two moderate quakes of M4.5 and M3.9

Here a few reports about the strong shaking:

Seeley Lake, Montana / MMI V (Moderate shaking): House shaking, fixtures moving,heard structure making cracking noise,pet bird would not calm down in her cage. Mild Aftershock.
Whitefish (217.9 km NNW from epicenter) [Map] / MMI V (Moderate shaking): Lasting about a minute.
Missoula, Mt / MMI IV (Light shaking): Thought my buddy was shaking the bed, light rumble then a few good jolts, nothing compared to the nisqually quake but enough to grab your attention.
Placerville Idaho / MMI IV (Light shaking): Shook bed. Moved bed enough to disconnect a plug-in. Outside deck moved and creaked. Felt slight aftershocks.
Stevensville / MMI V (Moderate shaking): Strong rolling shake with strong afterquake shortly after.
White Sulphur Springs / MMI IV (Light shaking)
Missoula, MT / MMI IV (Light shaking)
Grantsdale, MT (165.8 km SW from epicenter) [Map] / MMI III (Weak shaking): Felt it in 2 distinct waves @ 5 secs each, separated by @ 40 secs. Heard deep rumbling both times. Light items swayed. The dog came over to lean against my legs!
Bonners Ferry / MMI IV (Light shaking): Working late when the map started shaking at about 11:30pm PDST, then it intensified after about 10 seconds to moderate shaking, then down to a rolling motion, and dissipated after about 30 seconds.
(12.8 km W from epicenter) [Map] / MMI V (Moderate shaking)
Butte / MMI V (Moderate shaking)
(108.7 km SSW from epicenter) [Map] / MMI V (Moderate shaking)
Whitehall / MMI VI (Strong shaking)
(293.3 km SSE from epicenter) [Map] / MMI V (Moderate shaking)
St Maries Idaho (322.3 km E from epicenter) [Map] / MMI V (Moderate shaking) (via app)
Bozeman,MT / MMI V (Moderate shaking): Working on a laptop in bed and everthing started shaking- headboard rattling against the wall. Walked out into living room and kitchen. Items displaced and pendant lights swaying back and forth
Helena / MMI IV (Light shaking) (Click to Article)